5561440 has 24 divisors (see below), whose sum is σ = 13139280. Its totient is φ = 2224512.

The previous prime is 5561429. The next prime is 5561441. The reversal of 5561440 is 441655.

5561440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×5561440² = 61859229747200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17220 + ... + 17539.

It is an arithmetic number, because the mean of its divisors is an integer number (547470).

Almost surely, 2^5561440 is an apocalyptic number.

It is an amenable number.

5561440 is an abundant number, since it is smaller than the sum of its proper divisors (7577840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5561440 is a wasteful number, since it uses less digits than its factorization.

5561440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34774 (or 34766 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 5561440 is about 2358.2705527568. The cubic root of 5561440 is about 177.1722710187.

The spelling of 5561440 in words is "five million, five hundred sixty-one thousand, four hundred forty".